Figure 1.
Schematic of the heart (h) and proximal aorta (ao) in adult D. melanogaster.30 Direction of hemolymph inflow through ostia (o) and outflow through the aorta (ao) is indicated by the dashed gray arrows. The heart is located in the abdomen, and the aorta originates near the junction of the abdomen and thorax. OCT imaging in this study focused on the conical chamber (cc), the most anterior portion of the heart. An anterograde beat is characterized by posterior-to-anterior contraction of the heart, while a retrograde beat is characterized by anterior-to-posterior contraction of the heart.